The RVs also exhibited a long-term signal with a high semi-amplitude at \(\sim \) 102 d.
If the signal is due to an additional planet in the system, then its minimum mass would be \(27.0^{+5.6}_{-4.5}\,M_{\oplus }\) . Such system architectures are commonly reproduced in core accretion formation models [1]}.
Further RV measurements are, however, necessary to falsify or to prove a planetary origin of the signal, which could provide more insight into the architecture of multi-planetary systems.
